@article{MichauxMatternKallweit2018,
  author    = {Michaux, F. and Mattern, P. and Kallweit, Stephan},
  title     = {RoboPIV: how robotics enable PIV on a large industrial scale},
  series = {Measurement Science and Technology},
  volume    = {29},
  journal   = {Measurement Science and Technology},
  number    = {7},
  publisher = {IOP},
  address   = {Bristol},
  issn      = {1361-6501},
  doi       = {10.1088/1361-6501/aab5c1},
  pages     = {074009},
  year      = {2018},
  abstract  = {This work demonstrates how the interaction between particle image velocimetry (PIV) and robotics can massively increase measurement efficiency. The interdisciplinary approach is shown using the complex example of an automated, large scale, industrial environment: a typical automotive wind tunnel application. Both the high degree of flexibility in choosing the measurement region and the complete automation of stereo PIV measurements are presented. The setup consists of a combination of three robots, individually used as a 6D traversing unit for the laser illumination system as well as for each of the two cameras. Synchronised movements in the same reference frame are realised through a master-slave setup with a single interface to the user. By integrating the interface into the standard wind tunnel management system, a single measurement plane or a predefined sequence of several planes can be requested through a single trigger event, providing the resulting vector fields within minutes. In this paper, a brief overview on the demands of large scale industrial PIV and the existing solutions is given. Afterwards, the concept of RoboPIV is introduced as a new approach. In a first step, the usability of a selection of commercially available robot arms is analysed. The challenges of pose uncertainty and importance of absolute accuracy are demonstrated through comparative measurements, explaining the individual pros and cons of the analysed systems. Subsequently, the advantage of integrating RoboPIV directly into the existing wind tunnel management system is shown on basis of a typical measurement sequence. In a final step, a practical measurement procedure, including post-processing, is given by using real data and results. Ultimately, the benefits of high automation are demonstrated, leading to a drastic reduction in necessary measurement time compared to non-automated systems, thus massively increasing the efficiency of PIV measurements.},
  language  = {en}
}
@incollection{KallweitGottschalkWalenta2016,
  author    = {Kallweit, Stephan and Gottschalk, Michael and Walenta, Robert},
  title     = {ROS based safety concept for collaborative robots in industrial applications},
  series = {Advances in robot design and intelligent control : proceedings of the 24th International Conference on Robotics in Alpe-Adria-Danube Region (RAAD). (Advances in intelligent systems and computing ; 371)},
  booktitle = {Advances in robot design and intelligent control : proceedings of the 24th International Conference on Robotics in Alpe-Adria-Danube Region (RAAD). (Advances in intelligent systems and computing ; 371)},
  publisher = {Springer},
  address   = {Cham},
  organization    = {International Conference on Robotics in Alpe-Adria-Danube Region <24, 2015, Bucharest>},
  isbn      = {978-3-319-21289-0 (Print) ; 978-3-319-21290-6 (E-Book)},
  doi       = {10.1007/978-3-319-21290-6_3},
  pages     = {27 -- 35},
  year      = {2016},
  abstract  = {The production and assembly of customized products increases the demand for flexible automation systems. One approach is to remove the safety fences that separate human and industrial robot to combine their skills. This collaboration possesses a certain risk for the human co-worker, leading to numerous safety concepts to protect him. The human needs to be monitored and tracked by a safety system using different sensors. The proposed system consists of a RGBD camera for surveillance of the common working area, an array of optical distance sensors to compensate shadowing effects of the RGBD camera and a laser range finder to detect the co-worker when approaching the work cell. The software for collision detection, path planning, robot control and predicting the behaviour of the co-worker is based on the Robot Operating System (ROS). A first prototype of the work cell shows that with advanced algorithms from the field of mobile robotics a very flexible safety concept can be realized: the robot not simply stops its movement when detecting a collision, but plans and executes an alternative path around the obstacle.},
  language  = {en}
}
@article{KallweitDuesSiekmann1994,
  author    = {Kallweit, Stephan and Dues, M. W. and Siekmann, H. E.},
  title     = {Spectral Analysis of Pressure Fluctuations and Velocity Fields as Investigated on Propeller Pumps / Dues, M. W. ; Kallweit, S. D. ; Siekmann, H. E.},
  series = {Preprints : Fifth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-5) : May 8 - 11, 1994, Maui Marriott Hotel, Kaanapali, Maui, Hawaii, U.S.A / sponsored by Pacific Center of Thermal-Fluids Engineering. [W.-J. Yang, chairman] / Vol. B.},
  journal   = {Preprints : Fifth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-5) : May 8 - 11, 1994, Maui Marriott Hotel, Kaanapali, Maui, Hawaii, U.S.A / sponsored by Pacific Center of Thermal-Fluids Engineering. [W.-J. Yang, chairman] / Vol. B.},
  pages     = {98 -- 112},
  year      = {1994},
  language  = {en}
}
@article{KunkelGebhardtMpofuetal.2018,
  author    = {Kunkel, Maximilian Hugo and Gebhardt, Andreas and Mpofu, Khumbaulani and Kallweit, Stephan},
  title     = {Statistical assessment of mechanical properties of selective laser melted specimens of stainless steel},
  series = {The International Journal of Advanced Manufacturing Technology},
  volume    = {98},
  journal   = {The International Journal of Advanced Manufacturing Technology},
  number    = {5-8},
  publisher = {Springer},
  address   = {London},
  issn      = {0268-3768},
  doi       = {10.1007/s00170-018-2040-8},
  pages     = {1409 -- 1431},
  year      = {2018},
  abstract  = {The rail business is challenged by long product life cycles and a broad spectrum of assembly groups and single parts. When spare part obsolescence occurs, quick solutions are needed. A reproduction of obsolete parts is often connected to long waiting times and minimum lot quantities that need to be purchased and stored. Spare part storage is therefore challenged by growing stocks, bound capital and issues of part ageing. A possible solution could be a virtual storage of spare parts which will be 3D printed through additive manufacturing technologies in case of sudden demand. As mechanical properties of additive manufactured parts are neither guaranteed by machine manufacturers nor by service providers, the utilization of this relatively young technology is impeded and research is required to address these issues. This paper presents an examination of mechanical properties of specimens manufactured from stainless steel through the selective laser melting (SLM) process. The specimens were produced in multiple batches. This paper interrogates the question if the test results follow a normal distribution pattern and if mechanical property predictions can be made. The results will be put opposite existing threshold values provided as the industrial standard. Furthermore, probability predictions will be made in order to examine the potential of the SLM process to maintain state-of-the-art mechanical property requirements.},
  language  = {en}
}
@book{KaminskyKallweitWeberetal.2006,
  author    = {Kaminsky, Radoslav and Kallweit, Stephan and Weber, Hans-Joachim and Simons, Antoine and Verdonck, Pascal},
  title     = {Stereo high speed PIV measurements behind two different artificial heart valves},
  pages     = {9 S. : Ill., graph. Darst.},
  year      = {2006},
  language  = {en}
}
@inproceedings{SchleupenEngemannBagherietal.2016,
  author    = {Schleupen, Josef and Engemann, Heiko and Bagheri, Mohsen and Kallweit, Stephan},
  title     = {The potential of SMART climbing robot combined with a weatherproof cabin for rotor blade maintenance},
  series = {17th European Conference on Composite Materials - ECCM, Munich, Germany},
  booktitle = {17th European Conference on Composite Materials - ECCM, Munich, Germany},
  pages     = {1 -- 8},
  year      = {2016},
  language  = {en}
}
@inproceedings{FerreinSchifferKallweit2018,
  author    = {Ferrein, Alexander and Schiffer, Stefan and Kallweit, Stephan},
  title     = {The ROSIN Education Concept - Fostering ROS Industrial-Related Robotics Education in Europe},
  series = {ROBOT 2017: Third Iberian Robotics Conference},
  booktitle = {ROBOT 2017: Third Iberian Robotics Conference},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-319-70836-2},
  doi       = {10.1007/978-3-319-70836-2_31},
  pages     = {370 -- 381},
  year      = {2018},
  language  = {en}
}
@article{LimpertWiesenFerreinetal.2019,
  author    = {Limpert, Nicolas and Wiesen, Patrick and Ferrein, Alexander and Kallweit, Stephan and Schiffer, Stefan},
  title     = {The ROSIN Project and its Outreach to South Africa},
  series = {R\&D Journal},
  volume    = {35},
  journal   = {R\&D Journal},
  pages     = {1 -- 6},
  year      = {2019},
  language  = {en}
}
@inproceedings{GregorioFatigatiKallweit2015,
  author    = {Gregorio, Fabrizio de and Fatigati, Giovanni and Kallweit, Stephan},
  title     = {Tiltrotor airframe flow field characterization by SPIV},
  series = {11th International Symposium on Partivle Image Velocimetry - PIV15 , Santa Barbara, California, Sept 14-16, 2015},
  booktitle = {11th International Symposium on Partivle Image Velocimetry - PIV15 , Santa Barbara, California, Sept 14-16, 2015},
  pages     = {15 S.},
  year      = {2015},
  language  = {en}
}
@article{KallweitVanlanduitVanherzeeleetal.2007,
  author    = {Kallweit, Stephan and Vanlanduit, S. and Vanherzeele, J. and Brouns, M.},
  title     = {Time resolved PIV reconstruction of periodic flows / Vanlanduit, S. ; Vanherzeele, J. ; Kallweit, S. ; Brouns, M. ; Guillaume, P.},
  series = {PIV'07, 7th International Symposium on Particle Image Velocimetry, Roma, IT, Sep 11-14, 2007},
  journal   = {PIV'07, 7th International Symposium on Particle Image Velocimetry, Roma, IT, Sep 11-14, 2007},
  pages     = {1 -- 14},
  year      = {2007},
  language  = {en}
}
@article{KallweitKaminskyRossietal.2005,
  author    = {Kallweit, Stephan and Kaminsky, R. and Rossi, M. and Morbiducci, U.},
  title     = {Time resolved PIV technique for high temporal resolution measurements of prosthetic heart valves fluid dynamics / Kaminsky, R. ; Rossi, M. ; Morbiducci, U. ; Scalise, L. ; Catellini, P. ; Kallweit, S. ; Verdonck, P. ; Grigioni, M.},
  series = {The International Journal of Artificial Organs. 28 (2005), H. 9},
  journal   = {The International Journal of Artificial Organs. 28 (2005), H. 9},
  isbn      = {1724-6040},
  pages     = {946},
  year      = {2005},
  language  = {en}
}
@inproceedings{NeumannFerreinKallweitetal.2014,
  author    = {Neumann, Tobias and Ferrein, Alexander and Kallweit, Stephan and Scholl, Ingrid},
  title     = {Towards a mobile mapping robot for underground mines},
  series = {7th Conference of Robotics and Mechatronics : RobMech 2014 : 27th and 28th Nov. 2014, Cape Town},
  booktitle = {7th Conference of Robotics and Mechatronics : RobMech 2014 : 27th and 28th Nov. 2014, Cape Town},
  organization    = {Conference of Robotics and Mechatronics <7, 2014, Cape Town, South Africa>},
  pages     = {1 -- 6},
  year      = {2014},
  language  = {en}
}
@inproceedings{FerreinKallweitLautermann2012,
  author    = {Ferrein, Alexander and Kallweit, Stephan and Lautermann, Mark},
  title     = {Towards an autonomous pilot system for a tunnel boring machine},
  series = {5th Robotics and Mechatronics Conference of South Africa (ROBMECH) : 26 - 27 November 2012 ; CSIR International Conference Centre Gauteng South Africa},
  booktitle = {5th Robotics and Mechatronics Conference of South Africa (ROBMECH) : 26 - 27 November 2012 ; CSIR International Conference Centre Gauteng South Africa},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {978-1-4673-5183-6},
  year      = {2012},
  language  = {en}
}
@inproceedings{NakagawaKallweitMichauxetal.2016,
  author    = {Nakagawa, Masaki and Kallweit, Stephan and Michaux, Frank and Hojo, Teppei},
  title     = {Typical Velocity Fields and Vortical Structures around a Formula One Car, based on Experimental Investigations using Particle Image Velocimetry},
  series = {SAE International Journal of Passenger Cars - Mechanical Systems},
  booktitle = {SAE International Journal of Passenger Cars - Mechanical Systems},
  issn      = {1946-4002},
  doi       = {10.4271/2016-01-1611},
  pages     = {18 S.},
  year      = {2016},
  language  = {en}
}
@inproceedings{NakagawaMichauxKallweitetal.2015,
  author    = {Nakagawa, Masaki and Michaux, Frank and Kallweit, Stephan and Maeda, Kazuhiro},
  title     = {Unsteady flow measurements in the wake behind a wind-tunnel car model by using high-speed planar PIV},
  series = {11TH International Symposium on Particle Image Velocimetry - PIV15 Santa Barbara, California, September 14-16, 2015},
  booktitle = {11TH International Symposium on Particle Image Velocimetry - PIV15 Santa Barbara, California, September 14-16, 2015},
  pages     = {21 S.},
  year      = {2015},
  abstract  = {This study investigates unsteady characteristics of the wake behind a 28\%-scale car model in a wind tunnel using highspeed planar particle image velocimetry (PIV). The car model is based on a hatchback passenger car that is known to have relatively high fluctuations in its aerodynamic loads. This study primarily focuses on the lateral motion of the flow on the horizontal plane to determine the effect of the flow motion on the straight-line stability and the initial steering response of the actual car on a track. This paper first compares the flow fields in the wake behind the above mentioned model obtained using conventional and high-speed planar PIV, with sampling frequencies of 8 Hz and 1 kHz, respectively. Large asymmetrically coherent flow structures, which fluctuate at frequencies below 2 Hz, are observed in the results of highspeed PIV measurements, whereas conventional PIV is unable to capture these features of the flow owing to aliasing. This flow pattern with a laterally swaying motion is represented by opposite signs of cross-correlation coefficients of streamwise velocity fluctuations for the two sides of the car model. Effects of two aerodynamic devices that are known to reduce the fluctuation levels of the aerodynamic loads are then extensively investigated. The correlation analyses reveal that these devices indeed reduce the fluctuation levels of the flow and the correlation values around the rear combination-lamp, but it is found that the effects of these devices are different around the c-pillar.},
  language  = {en}
}
@book{Kallweit1994,
  author    = {Kallweit, Stephan},
  title     = {Untersuchungen zur Erstellung wissensbasierter Fehlerdiagnosesysteme f{\"u}r Kreiselpumpen},
  pages     = {271 S. : zahlr. graph. Darst.},
  year      = {1994},
  language  = {de}
}